#283A86#283A86

#283A86 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.1% C 0.129 H 269.3°. Best body text is #FFFFFF at 10.30:1 contrast (WCAG AA passes).

Color values

HEX	#283A86
RGB	rgb(40, 58, 134)
HSL	hsl(229, 54%, 34%)
HSV	hsv(229, 70%, 53%)
CMYK	cmyk(70.1%, 56.7%, 0%, 47.5%)
CIE-LAB	lab(27.29, 19.84, -44.82)
CIE-LCH	lch(27.29, 49.01, 293.88°)
OKLab	oklab(38.07% -0.0015 -0.1289)
OKLCH	oklch(38.07% 0.129 269.3)
XYZ	xyz(6.6897, 5.1978, 23.2004)
Luminance	0.0520 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283A86 #867428

analogous

#286986 #283A86 #452886

triadic

#283A86 #86283A #3A8628

tetradic

#283A86 #862869 #867428 #288645

square

#283A86 #862869 #867428 #288645

split-complementary

#283A86 #864528 #698628

monochromatic

#0C1128 #1A2657 #283A86 #364EB5 #5B71CE

Accessibility & contrast

On white

10.30

#283A86 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#283A86 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283A86

10.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283A86	#FFFFFF	#000000	##FFFFFF
##283A86	1.00	10.30	2.04	10.30
#FFFFFF	10.30	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004589

Deuteranopia (green-blind)

#003C84

Tritanopia (blue-blind)

#004C5A

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #283a86;
/* rgb */ color: rgb(40, 58, 134);
/* oklch */ color: oklch(38.1% 0.129 269.3);

Tailwind

colors: {
  custom: {
    50: '#6e6faa',
    500: '#283a86',
    950: '#000000',
  },
}

SCSS

$custom: #283a86;
$custom-light: #6e6faa;
$custom-dark: #000000;

JSON

{
  "hex": "#283a86",
  "rgb": {
    "r": 40,
    "g": 58,
    "b": 134
  },
  "hsl": {
    "h": 228.511,
    "s": 54.023,
    "l": 34.118
  },
  "oklch": {
    "l": 0.38068,
    "c": 0.12895,
    "h": 269.3
  },
  "luminance": 0.05198
}

Semantic roles & 50–950 ramp

primary

#283A86

secondary

#B3A157

accent

#C14ADD

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #283A86

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →